Its the Chromosomes, if your talking about the human cells.
Answer:
The answer is sex.
Explanation:
It is between two people.Pregnancy happens when a man's sperm fertilizes a woman's egg. During sex, semen is ejaculated from the man's penis into the woman's vagina. When the sperm reaches the egg it begins to fertilize. over the course of nine months the fetus will grow into a baby.
Answer:
D
Explanation:
The white blood cells in you are the guards of the body. They help fight infections that they dont recongize. They also can break down bacteria.
True..............,,,........
